diff options
Diffstat (limited to 'passes/pmgen/ice40_dsp.pmg')
| -rw-r--r-- | passes/pmgen/ice40_dsp.pmg | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/passes/pmgen/ice40_dsp.pmg b/passes/pmgen/ice40_dsp.pmg index 95e8da379..fbf498109 100644 --- a/passes/pmgen/ice40_dsp.pmg +++ b/passes/pmgen/ice40_dsp.pmg @@ -3,7 +3,7 @@ pattern ice40_dsp state <SigBit> clock state <bool> clock_pol cd_signed state <SigSpec> sigA sigB sigCD sigH sigO -state <Cell*> addAB muxAB ffO +state <Cell*> addAB muxAB match mul select mul->type.in($mul, \SB_MAC16) @@ -202,21 +202,21 @@ code muxAB sigO sigO = port(muxAB, \Y); endcode -match ffO_hilo +match ffO // Ensure that register is not already used if mul->type != \SB_MAC16 || (mul->parameters.at(\TOPOUTPUT_SELECT, 0).as_int() != 1 && mul->parameters.at(\BOTOUTPUT_SELECT, 0).as_int() != 1) // Ensure that OLOADTOP/OLOADBOT is unused or zero if mul->type != \SB_MAC16 || (mul->connections_.at(\OLOADTOP, State::S0).is_fully_zero() && mul->connections_.at(\OLOADBOT, State::S0).is_fully_zero()) if nusers(sigO) == 2 - select ffO_hilo->type.in($dff) - filter GetSize(port(ffO_hilo, \D)) >= GetSize(sigO) - slice offset GetSize(port(ffO_hilo, \D)) - filter offset+GetSize(sigO) <= GetSize(port(ffO_hilo, \D)) && port(ffO_hilo, \D).extract(offset, GetSize(sigO)) == sigO + select ffO->type.in($dff) + filter GetSize(port(ffO, \D)) >= GetSize(sigO) + slice offset GetSize(port(ffO, \D)) + filter offset+GetSize(sigO) <= GetSize(port(ffO, \D)) && port(ffO, \D).extract(offset, GetSize(sigO)) == sigO optional endmatch match ffO_lo - if !ffO_hilo && GetSize(sigO) > 16 + if !ffO && GetSize(sigO) > 16 // Ensure that register is not already used if mul->type != \SB_MAC16 || (mul->parameters.at(\TOPOUTPUT_SELECT, 0).as_int() != 1 && mul->parameters.at(\BOTOUTPUT_SELECT, 0).as_int() != 1) // Ensure that OLOADTOP/OLOADBOT is unused or zero @@ -230,11 +230,10 @@ match ffO_lo endmatch code ffO clock clock_pol sigO sigCD cd_signed - ffO = nullptr; - if (ffO_hilo) - ffO = ffO_hilo; - else if (ffO_lo) + if (ffO_lo) { + log_assert(!ffO); ffO = ffO_lo; + } if (ffO) { for (auto b : port(ffO, \Q)) if (b.wire->get_bool_attribute(\keep)) |